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diff --git a/libtess/tessmono.h b/libtess/tessmono.h
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-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-** 
-** http://oss.sgi.com/projects/FreeB
-** 
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-** 
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-** 
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-**
-*/
-/*
-** Author: Eric Veach, July 1994.
-**
-** $Date$ $Revision$
-** $Header$
-*/
-
-#ifndef __tessmono_h_
-#define __tessmono_h_
-
-/* __gl_meshTessellateMonoRegion( face ) tessellates a monotone region
- * (what else would it do??)  The region must consist of a single
- * loop of half-edges (see mesh.h) oriented CCW.  "Monotone" in this
- * case means that any vertical line intersects the interior of the
- * region in a single interval.  
- *
- * Tessellation consists of adding interior edges (actually pairs of
- * half-edges), to split the region into non-overlapping triangles.
- *
- * __gl_meshTessellateInterior( mesh ) tessellates each region of
- * the mesh which is marked "inside" the polygon.  Each such region
- * must be monotone.
- *
- * __gl_meshDiscardExterior( mesh ) zaps (ie. sets to NULL) all faces
- * which are not marked "inside" the polygon.  Since further mesh operations
- * on NULL faces are not allowed, the main purpose is to clean up the
- * mesh so that exterior loops are not represented in the data structure.
- *
- * __gl_meshSetWindingNumber( mesh, value, keepOnlyBoundary ) resets the
- * winding numbers on all edges so that regions marked "inside" the
- * polygon have a winding number of "value", and regions outside
- * have a winding number of 0.
- *
- * If keepOnlyBoundary is TRUE, it also deletes all edges which do not
- * separate an interior region from an exterior one.
- */
-
-int __gl_meshTessellateMonoRegion( GLUface *face );
-int __gl_meshTessellateInterior( GLUmesh *mesh );
-void __gl_meshDiscardExterior( GLUmesh *mesh );
-int __gl_meshSetWindingNumber( GLUmesh *mesh, int value,
-			        GLboolean keepOnlyBoundary );
-
-#endif